Anzu Hoshino leads a simple life, finding joy in video games, chocolate, and the company of her beloved feline. Love and romance hold no appeal to this high schooler, until a glitchy 3D otome game thrusts her into an unexpected situation. Suddenly, a strange sorcerer named Riri materializes from the screen and declares Anzu as "subject one," destined to experience a real-life harem storyline. Despite Anzu's protests, Riri seizes her cherished possessions as leverage to get her to prioritize love. Through a series of contrived mishaps and clichéd encounters, Anzu crosses paths with Tsukasa Kazuki, one of the most attractive boys at her school. Though initially irate, Anzu fights to resist Tsukasa's charm. However, amidst the fantastical plot Riri crafts for her, she begins to warm up to Tsukasa's kindhearted nature. It becomes increasingly difficult for Anzu to evade romance as Riri introduces her to other stereotypical pretty boys.